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Topic:
How to do the Array of Hope Lab |
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ID: Smitty |
Date/Time: 12/01/2010 9:05:07 AM |
Message:
My students and I are having trouble figuring out this lab can anyone please show me their code? |
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Reply Title:
This code works: |
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ID:
Benjamin |
Date/Time: 02/17/2014 6:59:51 PM |
Message:
import java.io.*;
import java.util.*;
public class adder
{
public static void main(String args[])
{
Scanner kbr= new Scanner(System.in);
System.out.println("Enter the numbers to be added in a format like: 2 - 4 + 45");
String input= kbr.nextLine();
// The portion below removes all spaces from the input line. It works like to the email spam detecter on 17-5 and 17-6.
Scanner prime= new Scanner(input);
prime.useDelimiter("");
String s= "";
while (prime.hasNext())
{
while (prime.hasNext("\\s")) // finds and skips all the spaces.
{
prime.skip("\\s*");
}
if (prime.hasNext())
{
s= s+ prime.next();
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Topic:
Project 11 - Name Reversal |
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ID: Panda |
Date/Time: 01/27/2011 6:26:14 AM |
Message:
Does anyone know how to do this? |
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Reply Title:
i think this is it |
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ID:
JavaCode |
Date/Time: 02/11/2011 10:54:55 AM |
Message:
import java.io.*;
import java.util.*;
public class Project
{
public static void main(String args[])
{
System.out.print("Please enter your name: ");
Scanner Levi=new Scanner(System.in);
String name=Levi.nextLine(),newname;
int x=name.length(),b;
for(b=x-1;b>=0;b--)
{
newname=name.substring(b,b+1);
System.out.print(newname.toLowerCase());
}
}
}
\\ I believe this is the code |
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Reply Title:
This one works |
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ID:
Zane |
Date/Time: 02/04/2014 9:16:01 AM |
Message:
import java.io.*;
import java.util.*;
public class NameReversal
{
public static void main( String args[] )
{
Scanner kbReader = new Scanner(System.in);
System.out.print("What's your name? ");
String name = kbReader.nextLine();
int strLen = name.length();
String reversedName= "";
for(int j = strLen - 1; j >= 0; j--)
{
String letter = name.substring(j, j + 1); //picks up just one letter at a time
reversedName = reversedName + letter;
}
System.out.println(reversedName.toLowerCase());
}
} |
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Topic:
Project 17- Add em up |
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ID: JavaCode |
Date/Time: 02/11/2011 11:00:14 AM |
Message:
My partner and I are having problems creating this project (Project 17- Add 'em Up), if somebody could please post their code or fix ours, so we can study how it works, that would be nice! :)
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Reply Title:
This is what we have so far |
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ID:
JavaCode |
Date/Time: 02/11/2011 11:03:17 AM |
Message:
This is what we have so far:
We can do things like 907+5, or 907-5, but we cant get 907+5-10 (both a + and -)
import java.io.*;
import java.util.*;
public class Modded
{
public static void main(String args[])
{
Scanner kb=new Scanner(System.in);
System.out.print("Enter something like 8 + 33 + 1,345 - 137 : ");
String s=kb.nextLine();
Scanner sc=new Scanner(s);
int sum=0;
if (s.contains("+"))
{
sc.useDelimiter("\\s*\\+\\s*");
while(sc.hasNextInt())
{
sum=sum+sc.nextInt();
}
}
if (s.contains("-"))
{
sc.useDelimiter("\\s*\\-\\s*");
while(sc.hasNextInt())
{
sum=sc.nextInt()-sc.nextInt();
}
}
System.out.println("Sum is: "+sum);
}} |
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Topic:
Lesson 17-2 |
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ID: angie |
Date/Time: 02/28/2011 11:40:56 PM |
Message:
while i'm doing project 17-2, i got error("missing return statement") and i don't know how to fix it
my code is
public class Crypto
{
public String encrypt(String sntnc)
{
String finalSntnc = "";
for(int j = 0; j < sntnc.length( ); j++)
{
char nextChar = sntnc.charAt(j);
switch (nextChar)
{
case 'v':
case 'V':
{
finalSntnc = finalSntnc + "ag\',r";
break;
}
case 'm':
case 'M':
{
finalSntnc = finalSntnc +"saad";
break;
}
case 'g':
case 'G':
{ finalSntnc = finalSntnc + "jeb..w";
break;
}
case 'b':
case 'B':
{
finalSntnc = finalSntnc + "dug>?/";
break;
}
default:
{
finalSntnc = finalSntnc + nextChar;
}
}
return finalSntnc;
}
}
public String decrypt(String sntnc)
{
sntnc = sntnc.replace("ag\',r","v");
sntnc = sntnc.replace("saad", "m");
sntnc = sntnc.replace("jeb..w", "g");
sntnc = sntnc.replace("dug>?/", "b");
return sntnc;
}
} |
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Topic:
Accessing the super classvariable/method |
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ID: manu |
Date/Time: 01/06/2012 7:03:41 AM |
Message:
i have a code like this
class A{
int i=10;
}
class B extends A {
int i=20;
}
class C extends B {
int i=30;
}
How to access the A class version of i from Class C
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Topic:
Help with Project(Hard!) |
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ID: Java Lean |
Date/Time: 09/04/2012 5:36:44 PM |
Message:
* This is project 17 and it asks to create a code that uses delimiters/while loops to add or subtract numbers, but I have no idea how to code that! I used the s.contains("-") and s.contains("+") in two if statements with while loops in them, but it wouldn't work. Please tell me the best way to code where an addition and subtraction sign will work! |
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Topic:
for-Loop |
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ID: Java Rules |
Date/Time: 12/06/2012 10:58:45 AM |
Message:
Can someone please explain step-by-step this for-Loop problem?
double kk = 3;
int j = 0;
for(j = 0; j <= 100; j++) {
kk = kk + Math.pow(j,2);
++kk;
}
System.out.println(j);
The answer should be 101. Thanks. |
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Topic:
Nested for-Loop |
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ID: Java Rules |
Date/Time: 12/06/2012 11:07:44 AM |
Message:
Can someone please explain step-by-step this problem?
int j, k;
int count = 0;
for(j=0; j<4; j++)
{
for(k=0; k<10; k++)
{
count++;
}
}
System.out.print(count--);
System.out.println(count);
The answer is 4039. Thanks. |
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